The former fruit and veg salesman has always maintained his innocence in the murder of his wife Arlene (33) in April 1998.

She was last seen alive waving the couple’s children off to school from their home in New Elgin.

Two juries have found him guilty of plotting his wife’s murder, despite his claim that he was on his delivery rounds at the time and that former friend, farmer Hector Dick was the real killer.

He was first convicted in 2003 and sentenced to 25 years in prison.

An appeal to the UK Supreme Court ruled that he had suffered a miscarriage of justice and a fresh trial took place earlier this year when he was again convicted of murder and ordered to serve a further 17 years.

Fraser’s latest claim that he has suffered a miscarriage of justice has not been explained by his legal team, but during his most recent trial a witness revealed that Fraser had been in prison before the disappearance of wife Arlene, who disappeared from her Elgin home in April 1998.